Members of the 1st Battalion the Coldstream Guards take part in the Changing of the Guard, in the forecourt of Buckingham Palace in London, Britain, August 23, 2021. Yui Mok/Pool via REUTERS

Members of the band of the Nijmegen Company Grenadier Guards take part in the Changing of the Guard at Buckingham Palace in London, Britain, August 23, 2021. Yui Mok/Pool via REUTERS

Members of 1st Battalion the Coldstream Guards attend the Changing of the Guard ceremony outside Buckingham Palace in London, Britain, August 23, 2021.

Members of the Nijmegen Company Grenadier Guards and the 1st Battalion the Coldstream Guards take part in the Changing of the Guard at Buckingham Palace in London, Britain, August 23, 2021. Yui Mok/Pool via REUTERS

Members of 1st Battalion the Coldstream Guards attend the Changing of the Guard ceremony outside Buckingham Palace in London, Britain, August 23, 2021.

Members of 1st Battalion the Coldstream Guards attend the Changing of the Guard ceremony outside Buckingham Palace in London, Britain, August 23, 2021.

Members of the Nijmegen Company Grenadier Guards and the 1st Battalion the Coldstream Guards take part in the Changing of the Guard at Buckingham Palace in London, Britain, August 23, 2021. Yui Mok/Pool via REUTERS

Members of 1st Battalion the Coldstream Guards attend the Changing of the Guard ceremony outside Buckingham Palace in London, Britain, August 23, 2021.

A member of the Nijmegen Company Grenadier Guards and of the 1st Battalion the Coldstream Guards take part in the Changing of the Guard at Buckingham Palace in London, Britain, August 23, 2021. Yui Mok/Pool via REUTERS

Members of 1st Battalion the Coldstream Guards attend the Changing of the Guard ceremony outside Buckingham Palace in London, Britain, August 23, 2021.

Members of old Guard of Nijmegen Company Grenadier Guards are replaced by the new Guard of 1st Battalion the Coldstream Guards as they perform the Changing of the Guard ceremony outside Buckingham Palace in London, Britain, August 23, 2021.

Members of the 1st Battalion the Coldstream Guards take part in the Changing of the Guard, in the forecourt of Buckingham Palace in London, Britain, August 23, 2021. Yui Mok/Pool via REUTERS

Members of the 1st Battalion the Coldstream Guards take part in the Changing of the Guard, in the forecourt of Buckingham Palace in London, Britain, August 23, 2021. Yui Mok/Pool via REUTERS

Members of old Guard of Nijmegen Company Grenadier Guards attend the Changing of the Guard ceremony outside Buckingham Palace in London, Britain, August 23, 2021.

People observe the Changing of the Guard ceremony outside Buckingham Palace in London, Britain, August 23, 2021. REUTERS/Henry Nicholls

Members of the Nijmegen Company Grenadier Guards and the 1st Battalion the Coldstream Guards take part in the Changing of the Guard, in the forecourt of Buckingham Palace in London, Britain, August 23, 2021. Yui Mok/Pool via REUTERS

Members of the Band of the Coldstream Guards take part in the Changing of the Guard, in the forecourt of Buckingham Palace, in London, Britain, August 23, 2021. Yui Mok/Pool via REUTERS

Members of the Nijmegen Company Grenadier Guards and the 1st Battalion the Coldstream Guards take part in the Changing of the Guard at Buckingham Palace in London, Britain, August 23, 2021. Yui Mok/Pool via REUTERS

Members of 1st Battalion the Coldstream Guards attend the Changing of the Guard ceremony outside Buckingham Palace in London, Britain, August 23, 2021.

Members of old Guard of Nijmegen Company Grenadier Guards are replaced by the new Guard of 1st Battalion the Coldstream Guards as they perform the Changing of the Guard ceremony outside Buckingham Palace in London, Britain, August 23, 2021.

A member of the 1st Battalion the Coldstream Guards (L) takes part in the Changing of the Guard, in the forecourt of Buckingham Palace, in London, Britain, August 23, 2021. Yui Mok/Pool via REUTERS